Service manual

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POSSIBLECAUSE
SOLUTION
TROUBLE SHOOTING
Openthewaterlineandmakesurewaterowstothebrewer.
Turn off brewer. Disconnect wires from water inlet coil terminals and
connectapowercordtotheterminals.Plugcordintoa110voutlet
andverifythatwaterowwhenpluggedinandstopswhencord
is disconnected. If valve does not respond to this test, replace the
valve.
When water in the heating tank is below the probe tip, yet water is
notrelling,pullthewireofftheprobeterminal.Ifwaterstartsow-
ingintothetank,ndground,cleanorreplacetheprobe.
Pull the wire from the probe terminal. With a volt meter, check the
voltageatthewaterinletcoilterminals.Thisshouldread110to
115volts.Ifnovoltageispresent,checkthewaterlevelcontrol
board. Make sure that the back of the board is grounded securely
tothemountingbracket.Checkforloosewireconnections.Replace
board.
1. Waterlineturnedoffor
 ltercloggedup.
2. Waterinletvalvecoil
burned out.
3. Groundedprobe.
4. Defective or burned out
water level control board.
PROBLEM: WATER IN TANK DOES NOT GET HOT OR WATER TEMPERATURE TOO LOW
POSSIBLECAUSE
SOLUTION
8. Thermostat is off.
CheckthethermostattomakesureitisintheONposition.Turnthe
thermostat stem clockwise until it stops.
9. Burned out heating
element.
Checkelementforcontinuityand/orcheckwithclampammeter.This
shouldshowareadingofapproximately15amps.Ifnopowerisgo-
ing through element, replace it.
PROBLEM: WATER DOES NOT FLOW INTO HEATING TANK
POSSIBLECAUSE SOLUTION
Turn power off and observe the water level in the heating tank. If
watercontinuestoowin,cleanorreplacethevalve.
Pull wire off from probe terminal. Touch the water tank shell with
theterminalattheendofthiswire.Ifwaterstopsowing,cleanor
replace the probe.
If probe is okay, check the water level control board. The water level
controlboardmustbesecurelygrounded.Checkforlooseconnec-
tions.Checkforvoltageattheinletvalveterminals.Replaceboard.
5. Defectivewaterinlet
valve.
6. Probe limed up.
7. Loose or ungrounded
water level control board.
PROBLEM: WATER IN HEATING TANK OVERFLOWING
GEMINI120A